Rubik's Cube

July 21, 2015 7:57 AM

Photo: NELSON ALMEIDA, AFP/Getty Images

Image 1of/5

Caption

Close

Image 1 of 5

Competitors try to solve Rubik's cubes during the Rubik's Cube World Championship in Sao Paulo, Brazil on July 17, 2015. Four hundred competitors from 40 countries take part in the 2015 event. This six-sided world famous brain teaser was created by Hungarian Erno Rubik in 1974. less

Competitors try to solve Rubik's cubes during the Rubik's Cube World Championship in Sao Paulo, Brazil on July 17, 2015. Four hundred competitors from 40 countries take part in the 2015 event. This six-sided ... more

A competitor wears a hat shaped like a Rudik's cube during the Rubik's Cube World Championship in Sao Paulo, Brazil on July 17, 2015. Four hundred competitors from 40 countries take part in the 2015 event. This six-sided world famous brain teaser was created by Hungarian Erno Rubik in 1974. less

A competitor wears a hat shaped like a Rudik's cube during the Rubik's Cube World Championship in Sao Paulo, Brazil on July 17, 2015. Four hundred competitors from 40 countries take part in the 2015 event. This ... more

Photo: NELSON ALMEIDA, AFP/Getty Images

A competitor wears a hat shaped like a Rudik's cube during the... Photo-8339018.113738 - seattlepi.com

Image 3 of 5

A competitor tries to solve a giant Rubik's cube during the Rubik's Cube World Championship in Sao Paulo, Brazil on July 17, 2015.

A competitor tries to solve a giant Rubik's cube during the Rubik's Cube World Championship in Sao Paulo, Brazil on July 17, 2015.